Car.



STATES PATENT GEORGE AMBRosE DNNAND ROBERT FRANKLIN DUNN, or DINUBA,

CALIFORNIA.

CAR'.

SPECIFICATION forming part of Letters Patent No. 658,142, datedseptemtei ie, ieo.

Application filed September 7, 1899. Serial No. 729,684. (No model.) I

To a/ZZ whom, it may concern,.-

Be it known that we, GEORGE AMBROsE DUNN', a citizen of Canada, andROBERT FRANKLIN DUNN, a citizen of the United States, both residing atDinuba, county of Tulare, State of California, have invented anImprovement in Cars; and we hereby declare the following to be a full,clear, and exact description of the same.

Our invention relates to a car and a sellcontained mechanism whereby itsdirection of travel may be changed without exterior or independentappliances.

It comprises details of construction which will be more fully explainedby reference to the accompanying drawings, in which- Figure 1 isa sideelevation showing the car supported and in readiness to travel upon oneset of wheels. Fig. 2 shows it supported upon the other set of wheels.

This car is particularly designed for use in places where it isnecessary to move the car a distance in one direction and then to changeits direction to travel transversely to its rst line of movement, and isespecially useful in places where it is impossible or inconvenient toemploy turn-tables or similar devices for changing the direction of thecar.

A is the main frame of the car, which is mounted upon Wheels B, andthese are adapted to run upon the track C or other support which willkeep them in their line of travel.

D is an upper frame, which is connected with the lower frame by links E.The links may he simply connected parallel with each other, so as tooperate like the parallel ruler,

or they may be lnade in the form of knee-1evers, one link beingconnected with the upper frame and the other with the lower frame andthe contiguous ends united by pivot-pins with a mechanism by which thelinks can be straightened into vertical line with each other to raisetheupper frame or allowed to bend at their junction to allow the upperframe to be depressed. In the present construction we have shown thelinks E as similar to the connections of a parallel ruler. To the frontpart of the lower frame is pivoted a lever arm or handle F, and by meansof a link G this lever is connected with the front of the upper frame D.

H H are wheels the axles of which are jour; naled upon or carried by theupper frame D, so that the wheels are movable with the upper frame. Thisset of wheels is here shown as standing transversely with the line oftravel of the Wheels B of the lower frame, and the two sets of wheelsare so journaled with relation to each other that when the upper frame Dis raised to its highest point, the links Estanding approximatelyvertical, the wheels H H will be lifted from the track or surface, whilethe wheels B will be resting upon the vtrack O and in conditionforoperation. When in this position, the truck may be drawn' along uponthe rails or support O, the wheels H being, as before stated, raised andout of contact. When the point has been reached where the change ofdirection is to take place, the lever-arm F may be moved, so to actthrough the link G to force the upper frame D down into contact with thetop of the frame A. This action first depresses the wheels H until theyrest upon the track or surface in the line of the new direction in whichthe car is to be moved. A further movement of the parts then acts by theleverage of the links E to raise the lower frame A, and with it itsWheels B, until they are entirely clear of the surface. A locking deviceI of any suitable description is made to hold the frames in contact whenthe car is in readiness to move in its new direction. The weight of thecar and whatever load there may be upon it will then be carried by thetransverse wheels H, and it is in readiness to take its new direction.By this construction all parts necessary to provide for the change ofdirection of travel are carried upon the car and it is independent ofany switches or arrangements of track or turn-table for changing itsdirection.

Having thus described our invention, what neeting said lever with theother frame whereby the latter may be operated.

2. In a car, the combination of a main frame having bearingwvheels, asuperposed frame having Wheels jonrnaled at right angles to those of themain frame, side links pivotally connected at opposite ends to saidframes whereby one frame is permitted to be raised above and loweredonto the other frame, a lever fulerumed to one frame and meansconnecting said lever With the other frame, and

a hook on one frame and a pin or stud ori the other frame engagedthereby to hold the frames together.

In witness whereof We have hereunto set I5 our hands.

GEORGE AMBRosE DUNN. ROBERT FRANKLIN DUNN.

Witnesses:

P. B. FULTON, W. E. LANDROUS;

